Scientific Method Flashcards
Gel electrophoresis
A test to compare DNA or proteins DNA is cut with enzymes then placed in wells.
Small fragment fall to bottom of plate compare banding patterns to read
Chromatography
A test to separate pigments(color)
Put pigment above water line
Indicator
A chemical that changes color with another chemical ex: Iodine= Amber
Iodine + starch= blue/black
Control
“Normal”
With medicine studies= placebo
Used for comparison
Dependent Variable
What to measure to answer your research question
Put y axis
“Amount of”
“Rate of”
Hypothesis
Educated prediction
IF(we do this), Then(this will happen)
Independent Variable
One per experiment
One factor that you change
Category “type of”
Placebo
Used for the control group in medicine studies
-saline shot or sugar pill
Sample size
- large groups of test subjects
- must have a large sample size to have accurate and reliable data
- reduces affect of individual differences
Theory
- A hypothesis that has been supported many many many times.
- Similar to a law but more complex understanding
Bias
Belief that is influenced by assumptions
Inference
Conclusions based on observations
Peer review
Several scientists examine the details of the experiment
Conclusion
Decision about the results
Control
Reference point used for comparison
